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File:Dragonfly metamorphosis.jpg|thumb|A dragonfly in its final ecdysis|moult, undergoing metamorphosis from its nymph (biology)|nymph form to an adult '''Metamorphosis''' is a biological process by which an animal physically developmental biology|develops after birth or hatching, involving a conspicuous and relatively abrupt change in the animal's body structure through cell cell growth#Cell reproduction|growth and cellular differentiation|differentiation. Some insects, fishes, amphibians, Mollusca|molluscs, crustaceans, cnidarians, echinoderms and tunicates undergo metamorphosis, which is usually accompanied by a change of habitat or behavior. Scientific usage of the term is exclusive, and is not applied to general aspects of cell growth, including rapid puberty|growth spurts. References to "metamorphosis" in mammals are imprecise...
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